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    Posts written by Mike Ichiriu

    Mike Ichiriu is VP of Marketing and Product at Zentera Systems, where he leads product strategy for the company, including its Zero Trust and agentic AI security initiatives.
    A Certified Cloud Security Professional (CCSP) and frequent speaker on enterprise security, Mike has 25+ years of experience across cybersecurity, networking silicon, and enterprise software, and holds 15 U.S. patents.

    Cybersecurity

    Defense in Depth for AI Agents: The Harness and the Environment

    on July 31, 2026 | By Mike Ichiriu
    Updated August 31, 2026 with findings from OpenAI's August 26 technical report and the independent investigation by METR and Redwood Research. An earlier version described the intrusion as the work of a single agent.
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    Agentic AI

    The Weights Are Coming Home: Why Enterprises Are Moving AI On Premises, and Even On Device

    on July 29, 2026 | By Mike Ichiriu
    In June 2026, something crossed a line that I think we will look back on as a marker. Vercel, which routes production AI traffic for thousands of applications, reported that open-weight models were processing 29 percent of all tokens through its ...
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    AI

    Agentic attacks run at machine speed. Here's what you can do.

    on July 20, 2026 | By Mike Ichiriu
    Update, July 21, 2026: OpenAI has disclosed that the Hugging Face intrusion described below was carried out by its own models during an internal capability evaluation, not by an unknown attacker. This post has been revised to reflect that ...
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    Cybersecurity

    How to Secure AI Agent Access to Operational Technology

    on July 10, 2026 | By Mike Ichiriu
    Securing AI agent access to operational technology means treating every agent as an untrusted, unpredictable connection into an environment where failure has physical consequences, and enforcing the agent’s boundaries at the network layer rather ...
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    AI

    Rogue AI Agents: Why Policy Controls Are Not Enough

    on June 9, 2026 | By Mike Ichiriu
    The core issue for protecting against rogue AI agents is not what an AI agent knows. It is what the agent can reach.
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    OT Security

    OT Security Was the Sleeper Hit of RSAC 2026

    on April 3, 2026 | By Mike Ichiriu
    RSAC 2026 just wrapped up in San Francisco (March 23–26), and the energy was exactly what you'd expect. Tens of thousands of security professionals packed into the Moscone Center, the hallways buzzing with demos, handshakes, and the kind of ...
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    Zero Trust

    Water OT Cybersecurity in 2026: Regulations, Threats, and a Practical Path Forward

    on March 31, 2026 | By Mike Ichiriu
    Water utilities have operated on voluntary cybersecurity guidance for years. That era just ended.
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    Why New OT Threat Groups Are Forcing a Reckoning With OT Network Security

    on February 19, 2026 | By Mike Ichiriu
    Three new adversary groups began targeting industrial control systems in 2025. That’s the headline finding from Dragos’ 9th Annual Year in Review OT/ICS Cybersecurity Report - and the details behind it should concern anyone responsible for securing ...
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    News

    When 'Keeping Them Out' Fails: Rethinking Critical Infrastructure Security After Poland

    on January 24, 2026 | By Mike Ichiriu
    This blog was updated on January 28, 2026 to reflect new information reported on this attack. On December 29, 2024, almost exactly ten years after Russian hackers blacked out 250,000 Ukrainians in the first-ever cyberattack to take down a power ...
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    Zero Trust

    Legacy Shadows: Illuminating Zero Trust Paths for Agencies in Brownfield Battles

    on December 17, 2025 | By Mike Ichiriu
    How federal agencies and their contractors can achieve Zero Trust for OT without disrupting mission-critical operations A control systems engineer is handed a mandate to achieve Target Level Zero Trust across an operational technology environment ...
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